ML16174A315
| ML16174A315 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 06/21/2016 |
| From: | NRC/RGN-III |
| To: | |
| References | |
| Download: ML16174A315 (27) | |
Text
Davis-Besse Nuclear Power Station Annual Assessment Meeting Open House June 21, 2016 2015 Reactor Oversight Process Nuclear Regulatory Commission - Region III
Our Mission To license and regulate the nations civilian use of byproduct, source, and special nuclear materials to ensure adequate protection of public health and safety, promote the common defense and security, and protect the environment.
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Materials Reactors Waste What We Regulate
Radon Military X-Rays What We Dont Regulate
Some Nuclear Facts 100 nuclear power plants supply about 20 percent of the electricity in the U.S.
Nuclear materials are used in medicine for diagnosis and cancer treatment.
Nuclear materials are widely used in industry, such as in density gauges, flow measurement devices, radiography devices, and irradiators.
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NRC Performance Goals Safety - Ensure adequate protection of public health and safety and the environment Security - Ensure adequate protection in the secure use and management of radioactive materials 6
How We Regulate
Regulatory Framework NRCs Safety Mission Strategic Performance Areas Cornerstones Cross-Cutting Areas Human Performance--Safety Conscious Work Environment--Problem Identification &
Resolution
Reactor Oversight Process 9
Safety Cornerstones Baseline Inspection Results Significance Threshold Action Matrix Significance Threshold Performance Indicator Results Regulatory Response Strategic Performance Areas Safety Cornerstones Baseline Inspection Results Significance Threshold Action Matrix Significance Threshold Performance Indicator Results Regulatory Response Strategic Performance Areas
Significance Threshold Increasing Safety Significance Green White Yellow Red Performance Indicators Inspection Findings Green White Yellow Red Increasing Safety Significance
Action Matrix Columns Increasing Safety Significance Inspection Management Involvement Regulatory Action Licensee
Response
Regulatory
Response
Degraded Multiple/Repetitive Degraded Unacceptable Performance
12 National Summary of Plant Performance Status as of 02/22/2016 Licensee Response 90 Regulatory Response 7
Degraded Cornerstone 0
Multiple/Repetitive Deg. Cornerstone 3
Unacceptable 0
IMC 0350 Oversight 0
Total 100
13 National Summary
- Performance Indicator Results for 2015*
- Green 6686
- White 12
- Yellow 0
- Red 0
- PIs are counted per plant per quarter
- Total Inspection Findings in 2015#
- Green 782
- White 8
- Yellow 0
- Red 0
- Finding data current as of 2/22/2016
NRC Annual Assessment Summary FirstEnergy Nuclear Operating Company operated the station safely and in a manner that preserved the public health and safety and protected the environment.
Davis-Besse was in the Licensee Response Column of the NRCs Action Matrix in the third quarter of 2015 Davis-Besse was in the Regulatory Response Column in first, second, and fourth quarters of 2015 due to one or more Greater-than-Green violations associated with the Physical Protection cornerstone No Cross-Cutting Themes were identified Davis-Besse Nuclear Power Station 14 14
NRC Inspection Activities 5761 total hours expended by NRC on Reactor Oversight Process activities 2429 inspector hours of direct inspection activity 638 inspector hours reviewing and observing plant operating status 1500 inspector hours of preparation for and documentation of inspection activities 1194 hours0.0138 days <br />0.332 hours <br />0.00197 weeks <br />4.54317e-4 months <br /> for other Reactor Oversight Process elements (e.g., assessments and communications) 15 Davis-Besse 2015
NRC Inspection Activities 2 resident inspectors on site - residents produced four quarterly inspection reports and walked through the plant daily 24 other inspectors participated in various inspections 3 major team inspections Supplemental Inspection for a Regulatory Response column entry Component Design Basis Inspection Biennial Problem Identification and Resolution Inspection Davis-Besse Nuclear Power Station for 2015 16
Significance Threshold Green Baseline Inspection White Requires additional NRC oversight Yellow Requires more NRC oversight Red Requires most NRC oversight Performance Indicators Inspection Findings Green Very low safety issue White Low to moderate safety issue Yellow Substantial safety issue Red High safety issue 17
Davis-Besse PIs and Findings All Green Performance Indicators 9 Green/Severity Level IV Inspection Findings 1 or more Greater-Than-Green Inspection Findings associated with the Security Cornerstone January 1 through December 31, 2015 18
Safety Significant Findings One or more Greater-Than-Green Findings carryover from 2014 Corrective Actions Found Sufficient during Inspection in Second Quarter of 2015 Davis-Besse transitioned to Licensee Response Column at beginning of third quarter 2015 One or more Greater-Than-Green Findings in fourth quarter of 2015 Davis-Besse transitioned to Regulatory Response Column at beginning of fourth quarter 2015 Davis-Besse Nuclear Power Station
NRC Inspection Findings Failure to maintain Flow-Accelerated Corrosion Computer Model results in a non-safety piping failure Failure to install and control reactor coolant pump seal vent flexible hoses per design analyses Failure to request and obtain a license amendment for use of an unreviewed method of analysis for the capability of the shield building Davis-Besse Nuclear Power Station Some Examples of Green Findings 20
NRC Inspection Plans for 2016 NRC Plans Baseline Inspections for 2016 This includes the following major team inspections:
Post License Renewal Inspection (completed)
Triennial Fire Protection Inspection Initial Reactor Operator License Examinations Supplemental Inspection for one or more Greater-Than-Green inspection findings 21 Davis-Besse Nuclear Plant
22 Mitigating Strategies (MS) & Spent Fuel Pool Instrumentation (SFPI) Order
- MS Order requires strategies to cope with a long term loss of safety systems
- SFPI Order requires plants to be able to tell if water is at or above certain levels
- Site Audit was performed in November 2015
- Site Safety Evaluation scheduled to be issued after the NRC receives the site compliance letter
- Regional inspection of MS inspection (TI 191, Rev 1) will be performed after Safety Evaluation issued Davis-Besse Fukushima Recommendations Status
Davis-Besse Fukushima Flooding Response Status Flooding Hazard Reevaluations
- Reevaluate Hazards using present-Day information
- Flooding Was Submitted March 2015
- Staff assessments will be issued by December 2016
- Inspectors completed TI-190 which verified a licensees interim actions were appropriate to mitigate the reevaluated flood levels.
Licensees will address the reevaluated flood heights as part of their Mitigating Strategies Assessment, and if impacted take one of four potential paths:
- 1) No change; 2) procedural change;
- 3) physical modifications; 4) Revised Mitigating Strategies 23
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- Seismic Walkdowns
- Verify that the site can meet its current requirements for hazard protection
- Walkdowns are complete; Staff assessments issued
- Seismic Hazard Reevaluations
- Reevaluate Hazards using present-Day information
- Seismic Reevaluations submitted March 31, 2014
- NRC assessment of the licensee submittal was issued on August 25, 2015
- NRC assessment in letter dated October 27, 2015, stated that a full seismic risk evaluation was not required
- Sites will evaluate the impacts of the updated Seismic hazards as part of their mitigating strategies assessment.
Davis-Besse Fukushima Seismic Response Status
Actions in Response to the Japan Nuclear Accident
- Actions in response to Japan Nuclear Accident: http://www.nrc.gov/japan/japan-info.html
- Mailbox for comments on staff actions:
JLD_Public.Resource@nrc.gov
- Office of Public Affairs Point of
Contact:
OPA.resource@nrc.gov or 301-415-8200 25
NRC Social Media Channels
- Blog:
http://public-blog.nrc-gateway.gov/
- Flickr:
http://www.flickr.com/photos/nrcgov/
- Twitter:
- YouTube: http://www.youtube.com/user/NRCgov
- RSS:
http://www.nrc.gov/public-involve/listserver.html#rss 26
27 Reference Sources
- Reactor Oversight Process
- http://www.nrc.gov/NRR/OVERSIGHT/ASSESS/index.html Public Electronic Reading Room
- http://www.nrc.gov/reading-rm.html Public Document Room 800-397-4209 (Toll Free)